Prontosan (B Braun, Bethlehem, PA) is 0.1% polyhexanide, 0.1% betaine, sodium hydroxide, and purified water. The polyhexanide is an antiseptic and betaine is a surfactant. This solution is an FDA approved device indicated for topical irrigation. This solution has high tolerability with robust antimicrobial activity. Polyhexanide has been utilized as the instillation solution for NPWTi with positive clinical results. Prontosan is currently being used as the instillation solution for NPWTi in this facility as the SOC. The dwell setting for this solution is 20 minutes. The volume of solution to be used is dependent on the size of the wound hence varies.